• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2001년도 International Conference CALS/EC KOREA
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• pp.615-624
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• 2001

Internet technology opens up another domain for building future CAD/CAM environment. The environment will be global, network-centric, and spatially distributed. In this paper, we present a new approach to network-centric virtual prototyping (NetVP) in a distributed design environment. The presented approach combines the current virtual assembly modeling and analysis technique with distributed computing and communication technology fur supporting virtual prototyping activities over the network. This paper focuses on interoperability, shape representation, and geometric processing for distributed virtual prototyping. STEP standard and CORBA-based interfaces allow the bi-directional communication between the CAD model and virtual prototyping model, which makes it possible to solve the problems of interoperability, heterogeneity of platforms, and data sharing. STEP AP203 and AP214 are utilized as a means of transferring and sharing product models. In addition, Attributed Abstracted B-rep (AAB) is introduced as 3D shape abstraction for transparent and efficient transmission of 3D models and for the maintenance of naming consistency between CAD models and virtual prototyping models over the network.

• 한국건설관리학회논문집
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• 제10권3호
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• pp.102-110
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• 2009

동시공학 연구는 최근까지 국내에서 인식이 부족하여 잘 활용되지 못하였고 다만 패스트 트랙에 관한 연구가 활발히 진행되어 왔다. 그러나 본 연구는 기존의 패스트 트랙 방법에서 정량적인 분석과 논리적으로 증명 및 평가하는 연구가 미비하다고 판단하여, 상위 개념인 동시공학 방법을 분석하였다. 설계단계에서 정성적인 분석이 아닌 실제 예제를 통하여 정량적인 자료를 이용하여 각 공정별 중첩이 전체 프로젝트에 미치는 영향을 명확하게 보여주는 분석방법을 제시하였다. 시뮬레이션 기법을 이용한 정량적인 분석방법을 통하여 실제 분석 결과를 가지고 의사결정에 참고 자료로 활용이 가능하도록 하였다. 사례분석 결과 중첩 비율별 공기 비용 간의 관계를 알 수 있었고 중첩 비율별 값을 가지고 공기 비용간의 정량적인 분석을 통해 최적점을 제시함으로서 의사결정이 가능토록 하였다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2005년도 추계 학술발표대회 논문집
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• pp.214-215
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• 2005

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2005년도 추계 학술발표대회 논문집
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• pp.28-29
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• 2005

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 1999년도 추계 학술발표대회 논문집
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• pp.40-41
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• 1999

데크노롤지의 발전은 사용자로 하여금 보다 다양하고 강력한 기능을 가진 제품에 대한 요구를 만족시킬 수 있는 시대를 도래하게 했다. 즉 종전의 단순 반복적이고 물리적인 기능에서 이제는 사용자의 기호나 특수한 상황에 대한 적용이 가능한 지적인 기능을 수행하는 제품이 사용자의 요구를 만족시키고 있다. (중략)

• 대한전기학회논문지
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• 제38권1호
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• pp.68-77
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• 1989

In this paper, a design approch is presented for a concurrent self-diagnosable microprocessor. An efficient diagnostic procedure to dynamically test the processor functional units decomposed by each insturction, concurrently with a program under execution is suggested. The basic goals of the proposed design approach are the low hardware overhead, no increase in the pin count and the minimal change of the initial design concepts on conventional microprocessors. The results of the performance of the suggested self-diagnosing hardware for an 8080 type microprocessor show that the suggested diagnosis scheme would be efficiently applicable, since diagnosing the processor functional units can be completed in a reasonably short time with the execution of an arbitrarily chosen sample program.

• 산업공학
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• 제14권1호
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• pp.20-29
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• 2001

This paper presents a concurrent design approach that deals with manufacturing cell formation and cellular layout in Cellular Manufacturing System. Manufacturing cell formation is to group machines into machine cells dedicated to manufacture of part families, and cellular layout problem determines layout of the manufacturing cells within shop and layout of the machines within a cell. In this paper, a concurrent approach for design of machine cell and cellular layout is developed considering manufacturing parameters such as alternative process plans, alternative machines, production volume and processing time of part, and cost per unit time of operation. A mathematical model which minimizes total cost consisting of machine installation cost, machine operating cost, and intercell and intracell movements cost of part is proposed. A hybrid method based on genetic algorithm is proposed to solve the manufacturing cell formation and cellular layout design problem concurrently. The performance of the hybrid method is examined on several problems.

• 산업경영시스템학회지
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• 제32권4호
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• pp.169-177
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• 2009

Concurrent Engineering (CE) has presented new possibilities for successful product development by incorporating various product life-cycle functions from the earlier stage of design. In the product design, geometric representation is vital not only in its traditional role as a means of communicating design information but also in its role as a means of externalizing designer's thought process by visualizing the design product. During the last dozens of years, there has been extraordinary development of computer-aided tools intended to generate, present or communicate 3D models. However, there has not been comparable progress in the development of 3D-CAD systems intended to represent and manipulate a variety of product life-cycle information in a consistent manner. In the previous research, the authors proposed a novel concept called Minus Volume (MV) to incorporate various design information relevant to product life-cycle functions. This paper proposes the use of the MV concept for the collaborative design environment, where many team members are geographically distributed over the networked environment, including Internet, Intranet, WWW, etc. A prototype 3D-CAD system is implemented based on the MV concept and illustrated with the successful implementation of collaborative design example.

• International Journal of Quality Innovation
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• 제3권2호
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• pp.38-45
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• 2002

Continuous quality improvement is now the focus of research and application in quality engineering. To achieve continuous improvement, it's necessary to integrate quality tools and to plan, design and control the whole process of creating quality. Based on the extensive literature review and the philosophy of concurrent quality engineering, the paper analyzes the relationships among major quality tools such as QFD, FMEA, DOE and SPC and presents a basic model and structure for the integration of quality tools.

• International Journal of Naval Architecture and Ocean Engineering
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• 제9권4호
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• pp.460-472
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• 2017

The design of harbours, as with any other system design, must be an optimization process. In this study, a global examination of the different constraints in coastal engineering was performed and an optimization problem was defined. The problem has multiple objectives, and the criteria to be minimized are the structure cost and wave height disturbance inside a harbour. As concluded in this survey, the constraints are predefined parameters, mandatory constraints or optional constraints. All of these constraints are categorized into four categories: environmental, fluid mechanical, structural and manoeuvring.